Dovetailing-machine.



' A. LASANCE.

DOVETAILING MACHINE.

APPLICATION FILED BEP'LIB, 1905.

901,454, I v Patentedi0ct.20,1908.

3 SHEETS-SHEET 1 ullnlmm A. LASANGE. DOVETAILING MACHINE. APPLICATIONFILED $1321.18, 1905.

901,454. Patent ed 001;. 20, 1908;

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rut nasms PETERS ca., WASHINGTON, n. c.

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A. .LASANGE. DOVETAILING IACHINE.

APPLICATION FILED SEPT. 18, 1905 901,454. Patented 0t.20,1 9os.

3 BKEETB-8KEET 3.

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UNITED STATES PATENT curios.

AUGUST LASANOE, OF CINCINNATI, OHIO.

DOVE TAILING-MACHINE To all whom it may concern:

Be it known that I, Auous'r LASANCE, a citizen of the United States,and, a resident of Cincinnati, in the county of Hamilton and State ofOhio, have invented a certain new and useful Improvement inDovetailing-Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, whichform a part of my specification.

My invention relates to a machine whereby the ends of boards may beprovided with clove-tails or mortises whose sides may be made to recede,so that when the tenons of the one board are inserted in the mortises ofthe other, the boards will be locked in place against any pull in adirection substantially parallel with the board; and the machine isintended for use more especially in the making of boxes, so that whenthe different boards forming the sides of a box have been assembled,they will be locked in place, and obviate the necessity of mailing orgluing them.

The purpose of my invention is to provide a machine which will not onlybe simple in construction, butwill also permit one or more boards to beoperated upon at one and the same time; a machine in which both theupward and downward movement or travel of the table is employed foroperating on the different ends or boards.

In the drawings :Figure 1, is a front elevation of my improved machinewith a portion of the guard broken away to show the cutters and othermechanism. Fig. 2, is a top plan view. Fig. 3, is a vertical sectionalview taken on line 33 of Fig. 2. Fig. 4, is a detailed view of theclutch-operating mechanism. Fig. 5, illustrates the style of mortise andtenon produced.

Like letters of reference indicate identical parts in the respectivefigures.

A represents the frame of the machine which is provided at its frontwith a composite table B, which is adapted to be moved up and down so asto pass the ends of the boards, which are to be provided with mortisesand tenons, across the cutters or saws arranged on the arbors, whoseconstruction will be hereinafter described.

The composite-table B is provided with the laterally extending arm a,see Figs. 1 and 2, which arm is rigidly secured to the table B or itsbase and may be provided at Specification of Letters Patent.

Application filed. September 18, 1905.

Patented Oct. 20, 1908.

Serial No. 279,028.

its free end with a roller or bolt which is adapted to take into thechannel or slotway b, with which the wing C, which is secured to the oneside of the frame of the machine, is provided. This wing C, may eitherbe bolted or in any other suitable manner secured to the frame.

The table B is controlled in its vertical movement by the nature of theslot-way b in the wing O; that is, if the slot-way 7) should be madewith the angle or incline shown in Fig. 1, it will be readily understoodthat, with the upper portion of the composite-table loosely mounted onthe base or lower portion of the table, the roller or bolt on the end ofthe arm a taking in the slot-way b will compel the upper portion of thetable to move in a similar plane parallel with the slot-way b, it beingshown that the upper part of the table is of less width than the base orlower portion, which permits the upper portion to take ,a pathcorresponding with the slot-way b. The upper part of composite-table B,is slidably mounted on the lower portion and is held in place by thebolts a a which take through the slots 6 b, as shown in Figs. 1 and 3.

0, d, are arbors or shafts, each of which is provided with a series ofdisk cutters or saws e, e, which are properly separated from each otherand firmly held by spacing blocks or collars e, 6; the whole beingsecurely keyed to the respective shafts. The shaft 0 has its bearings inthe housing f, f, see Fig. 2, while the shaft cl, has its bearings inthe housing f, (see Figs. 1 and 3) which are secured to the frame of themachine in an opening below the shaft 0, as can more clearly be seenin'Fig. 3. The shaft 0, is provided with a pulley c which is adapted toreceive a belt from a power shaft, and shaft d, is similarly providedwith a pulley cl which also receives a belt from a power shaft. The endsof shafts 0 and d, which are provided with the pulley, are supported onpillow-blocks beneath the housings f, f in the well-known manner, asclearly illustrated in the drawings. By having the one end of each shaftthus supported by pillow-blocks of the desired size, it is apparent thatthe arbors will be held at an angle or incline as seen.

D, is a pulley for receiving a belt from a power shaft, whereby power istransmitted through the medium of the pinion g, mounted on the sameshaft with the pulley D, to gear E. This gear E is mounted on a sleeve/2., which forms part of a clutch mechanism (see Fig. 2). The gear Ewith its sleeve h is of course loosely mounted on a shaft E on whichshaft is keyed or feathered the other section it of the clutchmechanism. The section or clutch it is operated by the bifurcated armit, see Fig. 3, the bifurcations taking to either side of the clutch h,which is provided with the circumferential groove it, see Fig. 2. Takingthrough the ends of the bifurcated arm and into the. groove h are theset-screws h. The bifurcated arm It is mounted on a shaft 7" and isnormally controlled by the coil-spring j, see Fig. l. Fulcrumed on thearm is the lever 70, whose one end is adapted to take against the lowerend of the bifurcated arm it, while the other end of the lever isconnected to the rod 70', which leads down to, and is connected with,the foot lever or treadle 7c. The treadle 7a is pivotally secured,preferably by a collar which takes about the lower cross-piece of theframe A, see Fig. 3. It will be seen that upon depressing the foot-leveris, that rod 70 will be drawn down and lever 70 rocked, whereby thebifurcated arm Zr will throw the clutch it into mesh with the sleeve hof the gear E, whereby clutch It will revolve, and with it the shaft E,to which it is feathered, thus giving motion also to arm or link M whichis keyed to the end of the shaft E. The arm M is provided preferablywith a slot-way into which a bolt takes, whereby the rod Z is secured toit and thus providing for any irregularities or variations that mayarise. This rod Z at its lower end is bolted to a rod Z which is keyedto the shaft Z, suitably mounted on the frame of the machine. Keyed tothe same shaft Z is red Z. These rods Z Z lead to the forward end of themachine, where they are secured through link connections as at 912/ (seeFigs. 1 and 3) with lobes or lower extensions on, of the tablebase. Thecomposite-table B is adapted to ride up and down in guide-ways formed inthe frame of the machine. These guideways may be made by bolting plates1 to the front of the machine.

In order that the clutch may remain intact during the operation of themachine, and be held against the action of the spring j, I provide a lugq, see Fig. 2, which normally takes into the notch q (as shown in Fig.8) with which the clutch-member h is provided; the clutch-member ithaving a similar notch diametrically opposite the one shown in Fig. 2.It will be seen that in shifting the member It into operative position,that the lug g, which is integral with the frame or supporting bar ofthe machine, will be made to ride out of the notch and bear against theouter extended edge of the clutch-member h, holding it over in mesh,until the clutch has made a half revolution, when the next notch will beopposite the lug Q and permit the clutch to be thrown out by the actionof the spring j. The notches are so arranged as to be opposite to thelug g whenever the shaft E has been revolved sufliciently to move thecomposite table B either to its lowest 0r highest point through theaction of the levers Z, Z and Z.

The table B is provided with the bifurcated or forked arm F which issecured in place by, and bolted onto, the rod G, see Fig. 1, which hasits bearings in earsr, 1", on the front of the base of the table and isfree to move slightly as will be seen. The bifurcations of the arm F areprovided with rods F which extend up through the table proper and takethrough a clamping plate F which extends across the table B, as can beseen in Figs. 1 and 2.

The bifurcated arm F is normally drawn down, and with it the clampingplate F, by the action of the spring a, which bears against the lowerear or lug r secured to the table base and against the collar n, whichis bolted on to the rod G. It will thusbe seen that plate F ispractically held down on the table B and of course will be held downonto the board or boards that are placed on the table. In order toprevent the clamping plate F from being drawn down too tightly on to theguides arranged on the table-top it is preferable to provide thecushioning springs t, which take about the rods F.

Pivotally secured to the lower end of the rod G at the point m is across-bar G whose ends are adapted to engage with the stopblocks orplates H and H, see Fig. 1. This cross-bar G is also bolted to theextension I which is preferably an integral part of the table base; thisprovides a fulcrum for the lever or bar G. It will be seen that when thetable has descended to a point where it will have passed the cutters,that the lever or cross-bar G will have its one end strike or buttagainst the stop-block H, and by reason of the connection of the bar Gwith the extension Lthe rod G will be pressed upward against the actionof the spring 97., thus relieving the pressure of the clampingpla-te F,on the boards operated upon, permitting them to be withdrawn frombeneath the clamping-plate F. In order that the same result may be hadwhen the table B has reached its highest point on the upward movementpast the cutters, the stop-block or plate H is provided, which willengage the other end of the bar or lever Gr, depressing that end andtipping the other upward, thus forcing the rod G up against the actionof the spring n and give the desired result. As the end of a board ismortised by the one passage of the table B past the cutters, an-

other end or board is inserted, thereby employing the return or reversemovement of the table.

I provide the table with a guide-plate L, which has bolt and slotconnection with the top of the table B. In order that the board orboards to be operated upon will not be inserted too far toward thecutters, I also provide the stop or gage 0 (see Fig. 3), against whichthe extended edge or ends of the boards may take. In order to preventthe boards from having any lateral move ment, I also prefer to providethe guide K which has a slot and bolt connection with the table B, sothat it may be adjusted to boards of different widths. This guide K hassecured to it, at right angles thereto, and extending in toward thecutters, the arm K, whose free end may be bifurcated as shown in Fig. 3,the arm being preferably of thin metal so as to have a slight springingtendency, permitting the one bifurcation to give slightly independent ofthe other. These bifurcations or fingers bear against the edges of theboards and hold them against the guide-plate L. My reason forconstructing the arm K with the bifurcated ends isthat more than oneboard may be inserted at the same time, and as there may be a slightvariation in the widths of the boards, the bifurcations of the arm Kwill bear against each board and permit of this slight variation in theboards without releasing pressure on the other board.

J is a yoke or bracket which is bolted to the base of thecomposite-table B, and this yoke or bracket, may also have secured to itthe plate or shield J, which will prevent the particles of wood frombeing thrown into the face of the operator. I provide the yoke orbracket J for the purpose of having a suspended weight attached thereto,which is intended to practically equalize or counterbalance the weightof the table and its parts, thus diminishing the power necessary tooperate this part of the machine.

I have shown and described what I beli eve to be the preferableconstruction of my improved machine, but it will be readily understoodthat a number of minor changes may be made without departing from thespirit of my invention, and I do not wish to be understood as limitingmyself to the exact construction shown and described.

Having thus described my invention, what I desire to claim as new, andto cover by Letters Patent, is

1. A dove tailing machine comprising a reciprocating work-supportingtable, cutter shafts arranged in substantially a common plane parallelto the plane of reciprocation of the table, said cutter-shafts inclinedtoward each other in said plane, and means to guide the table so thatthe path of its travel shall be normal to one shaft during part of itstravel, and normal to the other during another part of its travel, sothat the work shall be grooved at one angle by the cutters of one shaft,and at another angle by the cutters of the next shaft.

2. In a dove-tailing machine, the combination of a power shaft, a drivenshaft, clutch mechanism mounted on said driven shaft and normally out ofmesh, gearing intermediate of said power shaft and clutch mechanismwhereby power is communicated to said driven shaft, a lug secured to theframe of the machine and normally registering with said clutch when thelatter is out of mesh, but adapted to hold the clutch in operativeposition for a predetermined period, a feed table reciprocally mountedon the frame of the machine, means intermediate of the driven shaft andfeed table whereby the latter is given movement when the clutch is inoperative position, means connected with the table and engaging with aslot-way in the frame of the machine whereby the table is made toreciprocate at different angles, with cutters mounted on arborsinclining toward each other but in a common plane adjacent the path ofreciprocation.

3. A dove-tailing machine comprising a power shaft, a driven shaft,means intermediate of the power shaft and driven shaft whereby power iscommunicated to the latter at predetermined intervals, a table mountedin the frame of the machine, mechanism intermediate of said driven shaftand the table whereby the latter is reoiprocated, an arm connected withthe table and the frame of the machine. whereby the table is made toreciprocate at different angles, a lug secured to the frame of themachine and normally registering with the means interme diate of thepower shaft and driven shaft but adapted to hold said means in operativeposition for a predetermined interval, and cutters mounted on arborsarranged at an incline to each other and in a common plane in proximityto the path of reciprocation of the table, in combination with clampingmechanism normally held in proximity to the -table-top, and a leverconnected with said clamping mechanism and adapted to reciprocate withthe table whereby the relation of the clamping mechanism to the tabletopmay be altered at predetermined periods.

AUGUST LASANOE.

Witnesses:

LOUIS Gorr, GEORGE E. HEIDMAN.

